Public bug reported:
I'm running Ubuntu 20.04 and bind9 1:9.16.1-0ubuntu2.3.
BIND sometimes crashes with:
Sep 23 10:10:12 <hostname> named[1146]: timed out resolving
'www.independent.co.uk/TYPE65/IN': 2606:4700:4700::1001#53
Sep 23 10:10:12 <hostname> named[1146]: timed out resolving
'ssc.independent.co.uk/TYPE65/IN': 2606:4700:4700::1001#53
Sep 23 10:10:13 <hostname> named[1146]: timed out resolving
'www.independent.co.uk/TYPE65/IN': 1.0.0.1#53
Sep 23 10:10:13 <hostname> named[1146]: timed out resolving
'ssc.independent.co.uk/TYPE65/IN': 1.0.0.1#53
Sep 23 10:10:14 <hostname> named[1146]: timed out resolving
'www.independent.co.uk/TYPE65/IN': 2606:4700:4700::1111#53
Sep 23 10:10:14 <hostname> named[1146]: timed out resolving
'ssc.independent.co.uk/TYPE65/IN': 2606:4700:4700::1111#53
Sep 23 10:10:15 <hostname> named[1146]: timed out resolving
'www.independent.co.uk/TYPE65/IN': 1.1.1.1#53
Sep 23 10:10:16 <hostname> named[1146]: timed out resolving
'ssc.independent.co.uk/TYPE65/IN': 1.1.1.1#53
Sep 23 10:10:16 <hostname> named[1146]: resolver.c:5105:
INSIST(dns_name_issubdomain(&fctx->name, &fctx->domain)) failed, back trace
Sep 23 10:10:16 <hostname> named[1146]: #0 0x558b762dce43 in ??
Sep 23 10:10:16 <hostname> named[1146]: #1 0x7f390cf32ac0 in ??
Sep 23 10:10:16 <hostname> named[1146]: #2 0x7f390d0fb12d in ??
Sep 23 10:10:16 <hostname> named[1146]: #3 0x7f390d0fe940 in ??
Sep 23 10:10:16 <hostname> named[1146]: #4 0x7f390d104888 in ??
Sep 23 10:10:16 <hostname> named[1146]: #5 0x7f390d108f21 in ??
Sep 23 10:10:16 <hostname> named[1146]: #6 0x7f390d109a66 in ??
Sep 23 10:10:16 <hostname> named[1146]: #7 0x7f390d109ec6 in ??
Sep 23 10:10:16 <hostname> named[1146]: #8 0x7f390cf59fe1 in ??
Sep 23 10:10:16 <hostname> named[1146]: #9 0x7f390ca22609 in ??
Sep 23 10:10:16 <hostname> named[1146]: #10 0x7f390c943103 in ??
Sep 23 10:10:16 <hostname> named[1146]: exiting (due to assertion failure)
The crash has ocurred repeatedly on multiple hosts.
In all cases I observed BIND has logged timeouts immediately before each
crash.
** Affects: bind9 (Ubuntu)
Importance: Undecided
Status: New
** Tags: focal
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https://bugs.launchpad.net/bugs/1896740
Title:
BIND crashes with failed assertion
INSIST(dns_name_issubdomain(&fctx->name, &fctx->domain))
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